Electricity Saving Tips For Homes And Offices

Split or Window … which air conditioner should you buy?

By on January 5, 2015
This article is also available in these languages: hi Hindi

Should I buy a split air conditioner or a window air conditioner? This is a question that many air conditioner buyers thinks of, before making a purchase. And we keep getting this question quite regularly at Bijli Bachao. It is not just about split or window, but about a whole lot of things that should be considered while buying an air conditioner.  Air Conditioner is an appliance that can significantly blow up your electricity bills and utmost care should be taken while buying one. With this article we would try to provide you some guidelines on things to take care of before making a purchase decision for an air conditioner. Please note an air conditioner bought once will go on for next 10 years at least and thus it is important to make a right decision.

Air Conditioner

Split vs Window

Buying a split or a window is something that worries a lot of people. But from energy efficiency perspective there is no preferred choice. Both split and window can be equally efficient. What matters is EER or Energy Efficiency Ratio of the air conditioner. EER represents the amount of cooling an air conditioner can provide per watt of electricity it consumes. Bureau of Energy Efficiency rates air conditioners on its star rating based on EER of air conditioners. Higher the EER of air conditioner higher the star rating it will have. So a 5 star rated air conditioner provides more cooling per watt of electricity used.

Both split and window can have high EER ratios. But it is observed that Split air conditioners have more number of models in BEE 5 star rating as compared to Window air conditioners (check our research on air conditioners at this link: link). So if you are looking for high efficiency air conditioners then split air conditioners can provide you more options.

The main difference between the two is that window air conditioner has a single unit whereas split air conditioner has 2 units (indoor and outdoor). Split is lot more silent in operation as compared to window and looks aesthetically pleasing, but is relatively more complicated to install and requires more space as compared to window air conditioner.

Right sizing an air conditioner is very important

The most important thing that one should figure out before buying any air conditioner is the right size of the air conditioner. This can significantly impact your electricity bills. And from size we mean tonnage of air conditioner. Every room that is cooled has a certain amount of heat that depends on:

  1. Size of the room. This determines the amount of air in the room that needs to be cooled.
  2. Number of people in the room. Every human being emits heat and air conditioner needs to cool it.
  3. Amount of stuff kept in the room. Please note every item kept in the room will get cooled from the air conditioner, so lesser the stuff, lesser the electricity air conditioner will consume.
  4. Number of electrical appliances in the room (most electrical appliances emit heat, especially lights). Incandescent light bulbs can increase cooling load.
  5. Windows in the room. More the windows, more is the heat coming from outside. Well-insulated windows reduce cooling load. Check our insulation section for more details: https://www.bijlibachao.com/Save-Electricity/Insulation/
  6. Walls facing the sun can increase cooling load. Touch your walls and windows to check if they are hot or not and using the tips in insulation section to prevent heating of the room.

The amount of heat in a room and that coming in from walls and windows is represented in BTU (or British Thermal Unit). BTU is sum of heat from all the above-mentioned sources.

Every air conditioner has a cooling capacity, which is represented in BTU/hr. It is the BTUs of heat that it can remove in an hour. If the heat coming in the room (in BTUs) is more than the heat that air conditioner can remove, then the air conditioner will not be as effective. Thus an undersized air conditioner cannot remove heat effectively and the compressor of the air conditioner will continue running all the time thereby consuming more electricity.

With an undersized air conditioner, the compressor will keep running all the time and the temperature will not reach the desired level. They will not only be ineffective in cooling, but will also consume more electricity.

An oversized air conditioner will not only over cool your room but also will be ineffective in removing the humidity in a room. So if you set AC to 25, the extra energy that the compressor provides will cool it beyond 25. It will have shorter run cycles but all air conditioners are designed for optimum run cycles and if the cycle is shorter than that then the efficiency is reduced (source: energy star).

So every air conditioner is designed to run at optimum efficiency only if it is used as per the right size. So always size the air conditioner properly. You can use the calculator available at this link before buying an air conditioner: http://www.lg.com/in/support/ac-tonnage-calculator.

If you are not sure about what size to buy, you can always buy an inverter technology air conditioner, as it adjusts to the size and requirements of the room automatically, and thus makes optimum electricity consumption. To check more about inverter ac see our article: Air Conditioners with Inverter technology can help save electricity.

Look for the right options in the air conditioner

In a previous article (Various modes for running air conditioners and their impact on electricity bill) we discussed about various modes of air conditioners and their impact on electricity consumption. It is very important to figure out if the air conditioner has all the modes as per your requirement. If you live in humid area, a dry mode is important. Any air conditioner with energy saver mode and features should be preferred.

Star rating is for real

BEE Star rating of air conditioner does matter a lot. Any air conditioner would consume anywhere between 1-2 units per hour of usage based on tonnage, efficiency and size. Which means if it is used for 10 hours per day, it can consume about 10-20 units in a day or 300-600 units a month (for 10 hours of use daily). At an average rate of Rs 6-7 per unit (you can check your per unit rate using our calculator: Online Electricity Bill Calculator – For all states in India) it can be close to Rs 1800-4000 per month. If your usage is high then the yearly cost of an air conditioner can go very high. In case of high usage, incremental cost of buying a higher star rated air conditioner can easily be recovered in a few years. Please note that the air conditioner will work for at least 10 years and the electricity prices are on a rise. Buying an efficient one while buying a new air conditioner can prevent a lot of heartburn for you in future.

It is important to make a right decision while buying an air conditioner, as it is a long-term utility for you. Do not let lucrative deals, discounts and persuasion by a sales person impact your decision to buy an efficient appliance. A wrong decision on an appliance like air conditioner can significantly impact your electricity bills. We are trying to work out a calculator that can help you choose the right air conditioner for you and hope to release it soon. Till that time you can check the list of top ten most efficient air conditioners at: Top Ten Air Conditioners in India by electricity consumption and size.

References

http://www.energystar.gov/ia/home_improvement/home_sealing/RightSized_AirCondFS_2005.pdf

http://www.energystar.gov/index.cfm?c=roomac.pr_properly_sized


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There Are 97 Comments

  1. Syed Usama Ameen says:

    Hi Abhishek
    Hope you are fine. we are planning to make our four room air conditioned.
    first room ground floor 12×10 (120 sqr ft) 11 ft (height) no direct sunlight, 2 persons 3 hours a day
    second room first floor 12×10 (120 sqr ft) 8.5 ft (hght) no direct sunlight, 5 persons 10 hrs a day.
    third room top floor 12×10 (120 sqr ft) 11 feet (hgt) exposed to sun from top eastern and northern sides 5 persons 4 hours a day.
    fourth room top floor 12×12 (144 sqr ft) 8 ft (hgt) exposed to sun from top and southern sides 2 persons 4 hours a day.
    we seek your advise regarding tonnage, type (single split-multi split), technology ( traditional-inverter) we want energy efficient economic and value for money appliance (preferably 5 starer) suggest the brand if you could keeping our requirements in view. meanwhile we have been listening good reviews about daikin and blue star former seems a bit expensive comparatively. is it worth it?
    we are awaiting your response.

    Regards

    • Abhishek Jain says:

      Hi,

      Which city is this for? Both Daikin and Blue Star are great brands with good reliability. Daikin is Japanese whereas Blue Star is Indian. However if we look at energy efficiency, then Daikin products in general have higher energy efficiency ration as compared to Blue Star in the same star rating range. But I would say it would depend on the size requirement of your room which I can tell only when I know your city.

      • Syed Usama Ameen says:

        Hi,
        First of all Many thanks for your quick and valuable response. i should have mentioned it in earlier correspondence anyway i am put up in Mumbai. eager to know your calculations and suggestions.

        Thanks again

        • Abhishek Jain says:

          Hi,

          Here are my calculations:

          1) Room 1: As per my calculation 0.9 ton cooling is required. So 1 ton AC should be good. Usage of the AC is less (I guess it is less than 600 hrs/year), so a regular AC would be good.

          2) Room 2: As per my calculations 0.8 ton cooling is required. Usage is also high, so 0.75 ton inverter AC would be great for the room.

          3) Room 3: As per my calculations 1.2 ton cooling is required. Again I think usage is less (less than 600 hrs/year), so regular AC would be good.

          4) Room 4: As per my calculations 1.2 ton cooling is required. Again I think usage is less (less than 600 hrs/year), so regular AC would be good.

          If you go for multi split a 3.5-4 ton multi split inverter AC would be good for 4 rooms. Daikin, Sharp, Bluestar have options in multi split inverter but I am not sure of the prices.

          Daikin and Bluestar both have good BEE 5 star rated models and you can go for any brand of your liking. In Inverter AC of 0.75 ton I would suggest you to go for Daikin.

  2. Pooja says:

    Hi Sir,

    We plan to install split AC in our room which is a small room of 8*8 sq feet as well as in other bedroom which is 10*8 sq feet approx. We already have AC in the third room, hence for these two rooms we plan to go for one dual Split AC wherein it will have 2 vents one in each room which can function simultaneously so both rooms would be sufficiently cooled. The reason being, buying again 2 different ac’s for 2 rooms would be costly affair . Leave alone the electricity bill for 3 ACs in one house. Can this or similar option be workable? If not what other options can be thought of.

    Thanks in advance for your reply.

    • Abhishek Jain says:

      Hi Pooja,

      Typical multi split ACs have 3 or more indoor units. I have not seen one with two units. Also if you are going for multi split it is better to go for one with inverter technology. Your rooms would not need more than 0.75 tons of cooling each or 1.5 tons in total. You can check Sharp, Daikin, LG they have multi split inverter AC options.

  3. Mridul Singh says:

    Hi Sir,
    I just want to know about Godrej GSC 18FG 6 ONG & GSC 18FG 6 WNG

    1. These are 6 star or 5 Star ?
    2. Compressure is good or not (for both) ?

    pls, help me sir at the earliest.

    THANKs a Lot .

    • Abhishek Jain says:

      Hi,

      There is nothing like 6 stars. BEE only gives up to 5 star. So these ACs are BEE 5 star rated. Compressor for these ACs are good. They are high efficiency because they use R290 which is highly energy efficient refrigerant.

  4. C V Pillai says:

    It is heard that window ac can has got ventilation but split does not have. As a result, window ac is more suitable as it can get fresh air. Is this correct ?

    • Abhishek Jain says:

      There is no way an air conditioner can get fresh air. The principle on which air conditioner works cannot let you get fresh air from outside. It does not work like an air cooler.

      • Sarang Sarode says:

        Hi,
        Yes, window ac is more suitable as it can get fresh air. In window ac you can adjust the amount of infiltration (i.e. addition of ambient air ) whereas split ac does not have such provision.
        Window ac does not even cool whole room, it keeps some temperature gradient along vertical direction. It only cools room up-to certain height, depending upon installation height, thus saves energy. If you have sensible hand you can even feel the temperature difference when raise your hand in room.
        In my view the only major disadvantage of window ac is noise. It creates more noise compare to split ac. If you are ok with it then definitely go for it.
        regards,
        Sarang

  5. toon says:

    I am planning to buy a split a.c for my bedroom which 13” * 13.6”. I live in Bangalore. My flat is the 1st floor of a 4 storey apartment.it is north facing and has a window. My usage maybe around 5-6 hours a day but not everyday. Please suggest a cost effective model with good ERR rating.

    • Abhishek Jain says:

      You need 1.5 ton AC for your room. You can look at these models:

      These are some with highest EER:
      GODREJ GSC 18 FG 6 ONG or GSC 18 FG 6 WNG
      HITACHI RAU518HUDDZ or RAU518HUDD
      LG LSA5AP5M or LSA5ES5M or LSA5MP5M or LSA5NP5F or LSA5SP5M
      SAMSUNG AR18HC5EXLZ or AR18HC5TXNC or AR18HC5TYUR

      However as a brand japanese brands (Hitachi, Daikin, Panasonic, General, Mitsubishi) + Carrier + Blue star are quite durable. You can go for any japanese brand BEE 5 star rated model as well.

  6. santoah says:

    I planning for buying split AC for my bedroom having 10*10 Feet and bedroom has 6*6 Feet glass window not facing sun but afternoon light come so pls suggest wht ton I prefr and wht brAnd prefer also usage normal 8-10 Hrs day so energy saving and durable in working

    • Abhishek Jain says:

      Hi Santosh,

      Which city is this room in? Also does the ceiling get direct sunlight? Also how many months in a year would you use it?

  7. Karan Shah says:

    Sir,
    I am planning to buy 2 split ACs one for bed room and another for living room.
    My AC usage is going to be very low. Won’t be used more then 2-3 hours a day in total for both the ACs.
    Please suggest me the best AC for me with such less usage.
    Shall I buy 5 star rating or inverter?
    If possible please do explain what types of AC to be bought on different usage parameters.
    Thank You.

    • Abhishek Jain says:

      Hello Mr Shah,

      There are several factors that one need to consider while buying AC:

      1) Tonnage of AC: Depends on several factors, but primarily on size of room, city where you live in, window sizes, people in the room. Oversized AC consumes more electricity, and undersized does not cool properly.

      2) Star Rating: Choice of BEE 5 star/inverter tech or a lower rating depends on your usage of AC. If your usage is more than 1000 hrs per year (with traiff more than Rs 5), it is better to go for higher efficiency models. Benefit of inverter tech is that it is a variable tonnage AC and as the tonnage requirement is different every month and every day, this AC auto adjusts to the needs and thus saves electricity.

      3) Brand: Some brands offer better reliability/technology and some have better service network. One has to factor in both. Once you have decided on star rating, the most efficient models from good brands can be selected.

      If you provide us with more details as in which size of your room, which floor they are on, is there any floor above it, are the walls exposed to sun, usage in hours per day and months per year, and approximate budget, then we can recommend you something. Hope this helps.

      Regards,
      Abhishek

  8. Vibhor Sharma says:

    Hi Abhishek,

    I want to know that what is the benefit of tower AC? Is tower AC are better than split and window AC? I have also seen a Portable AC 1 ton(lloyd company). I want to know that is it good to buy portable AC?

    • Abhishek Jain says:

      Hi Vibhor,

      Tower ACs are just like split ACs, its just that they do not need any installation on wall but they need space on floor. They are available in larger capacity usually for bigger rooms. Portable ACs are smaller ACs and can be easily moved from one room to another. The only big drawback I see of these two is that the energy efficient technologies are not available in these and thus you will have to live with lower efficiency product that will consume quite some amount of electricity.

  9. Marisa Lopez says:

    Hi

    I would like to know if possible how much it would cost per day to run my LG Inverter that I have in a staff room. In summer it will be on for at least 8hrs (as the room is being leased out as an office) and vice versa in Winter.

    Regards

    Marisa

  10. Dheeraj Sangal says:

    Dear Abhishek,

    First of all… too good effort in running such an informative portal.

    I am looking for an ac for room size 12*15, top floor, east facing, one 8*4 window in east (covered with curtain), no other wall side under direct sunlight, property located in Faridabad. Preferably looking for an inverter tec. ac as usuage in 6-10 hrs a day for six months. please suggest tonnage and brand.

    Regards,
    Dheeraj

    • Abhishek Jain says:

      Hello Mr Sangal,

      You need about 2 tons of cooling for your room (or 1.8 ton inverter AC). You can look at these inverter tech models:

      You can check these 1.8 ton inverter ACs:
      Daikin FTKP60PRV16
      Daikin FTKM60PRV16
      Sharp AH-X21RET
      LG BS-Q246C8R3
      LG BS-Q246C8A2
      Samsung AR24HV5NBWK

      Or these 2 ton inverter:
      Hitachi Ace Inverter 2 ton
      Mitsubishi Electric MSY-GE24VA

      • dheeraj sangal says:

        Thanks Abhishek… How about a 1.5 ton invertor of daikin…?? As to save on ac cost, plus it has higher cop and eer as compared to 1.8… Please suggest..

        • Abhishek Jain says:

          Hello Mr Sangal,

          1.5 ton inverter will work well on most days/nights. But it may fall a bit short during peak summer day time. So on hottest day in summer it may not cool the whole room effectively (will cool area close to the AC, but some parts of the room away from the AC may not feel cool). But otherwise it can work fine. It will be cheaper on cost and will certainly be better in saving electricity all other times.

  11. Arun says:

    Sir,
    We live in tamil nadu, india.
    We have a 2.0 tone Blue star ac (year 2009) fixed with stabilizer and mcp switch.
    we have three phase EB line supply, out of which one phase is connected to AC alone.
    The AC when switched on, after 2 min, it tries to start, but the stabilizer trips it every time.
    The connection is as follows
    EB -> MCP -> stabilizer -> AC
    We disconnected MCP and tried,
    We disconnected stabilizer and tried,
    We even gave EB -> AC direct connection and tried.,
    But AC tries to start, but trips every time.

    when checked with service people of blue star, they changed the capacitor and tried, but again trips every time. But when taken to their service station, the AC runs fine.
    Then i checked EB line. the voltage is between 200 – 240.the amps is between 0 – 3. the power factor is between 0-1
    Why is the AC tripping and not running at all ? how to solve this problem ?

  12. Sudhanshu Arora says:

    Hi sir,
    I am looking to buy an AC for my room on first floor of my duplex.
    room size: 16’x16’x12′ (lxbxh)
    it receives direct sunlight throughout the day. 3 sides plus roof exposed to sunlight.
    ventilation is through one window of 4’x4.5′.
    usage will be around 1000 hours or less per year.
    please recommend which type, tonnage, star rating brand of AC should I go for?
    also the usage may increase in future to 13-1400 hours so suggest for both the cases.
    Thanks,
    Sudhanshu Arora

  13. Rupesh K C says:

    Hi Abhishek,
    I m staying in Mumbai and looking for 1 ton inverter AC for reducing my electricity cost as i run AC for at least 10 hours a day.

    I have short listed four ac’s. I will be thank full if u can suggest me looking both high energy saver and service of brand.
    FTKS35EVMA Daikin R410 Gas
    FTKE sereis Daikin R22 Gas
    FTKP sereis Daikin R32 Gas
    SRK13YJ-S Mitsubishi Heavy

    Your prompt reply will be highly apprecited

    Thanks
    Rupesh K C

    • Abhishek Jain says:

      Hi Rupesh,

      FTKS is a hot and cold AC. Amongst the list FTKP will be good. Or FTKM will be better.

      • Rupesh K C says:

        Dear Abhishek,
        I m getting FTKS only cooling R410 Gas Thailand made. Also how about SRK12YL-S mitsubishi heavy. ( I think fter sales service is poor, not sure)

        Also please explain if any difference R22, R32 & R410 Gas. Will this have effect on electricity Bill

        • Abhishek Jain says:

          MHI is a good brand however not highly visible in India. So it is highly likely that its service may not be effective if you are in a smaller city. FTKP and FTKM are better than FTKS (indian made) for cooling. I would still suggest that you go for Daikin. As for gas, it does not have impact on electricity bill, but R32 and R410 are greener and have lesser negative impact on environment.

  14. Deepak Mitra says:

    Dear Abhishek,
    1. Office Space : 10 x 18 2. Area : Delhi, 3 : no. of people : maximum 3, Location : First Floor there is two storey Building, 4. Option : split or window can be installed 5 : Sunlight : no Direct Sunlight 6: Brand : Hitachi/Bluestar/LG/Carrier any..Please suggest

    • Abhishek Jain says:

      Hello Mr Mitra,

      You need about 2 tons of cooling if the ceiling receives direct sunlight (which I assume is right because you said first floor in two story building). If that is not the case then you need 1.7 tons of cooling. You are on commercial connection and I think you should go for inverter tech AC. In case you need 2 ton cooling then 1.8 tons of inverter AC should be good. If you need 1.7 ton then 1.5 ton inverter tech should be good. You can look at these models:

      1.5 ton inverter:
      Hitachi Ace or Kampa inverter 1.5 ton
      Daikin FTKM50PRV16
      Samsung AR18HV5DAWK
      LG BS-Q186C8R6
      Sharp AH-XP18PHT, AH-XP18PMT, AH-X18PET, AH-XP18MV
      Samsung AR18HV5NFWK

      1.8 ton inverter tech:
      Daikin FTKP60PRV16
      Daikin FTKM60PRV16
      Sharp AH-X21RET
      LG BS-Q246C8R3
      LG BS-Q246C8A2
      Samsung AR24HV5NBWK

  15. Deepak Mitra says:

    Sir, as mentioned in my last request area of my office space is 10 x 18 and it is on first floor…there are two storey building, usage approx 8 hrs a day…there is no direct sun light on the walls.we are looking for value of money product.either split or window…Please suggest…should i buy now or should i wait for summer sale

  16. Deepak Mitra says:

    We have Office at First Floor and area is about 10 x 18 we can use either split or window…Please suggest which one i should use…Please suggest 5 star only.

    • Abhishek Jain says:

      There are several factors that one need to consider while buying AC:

      1) Tonnage of AC: Depends on several factors, but primarily on size of room, city where you live in, window sizes, people in the room. Oversized AC consumes more electricity, and undersized does not cool properly.

      2) Star Rating: Choice of BEE 5 star/inverter tech or a lower rating depends on your usage of AC. If your usage is more than 1000 hrs per year (with traiff more than Rs 5), it is better to go for higher efficiency models. Benefit of inverter tech is that it is a variable tonnage AC and as the tonnage requirement is different every month and every day, this AC auto adjusts to the needs and thus saves electricity.

      3) Brand: Some brands offer better reliability/technology and some have better service network. One has to factor in both. Once you have decided on star rating, the most efficient models from good brands can be selected.

      If you provide us with more details as in which city do you live in, sizes of your room, which floor they are on, is there any floor above it, are the walls exposed to sun, usage in hours per day and months per year, and approximate budget, then we can recommend you something. Hope this helps.

      Regards,
      Abhishek

  17. Deepak says:

    hello sir,kindly suggest me a best split ac for a room size of 12*10*10 ground floor,no direct sunlight and there is room above of thjis room,i live in ghaziabad city.so,plz suggest me as per the energy efficient ac whether inverter technology or bee 5 star ac is good for me to installed.
    thanks

    • Abhishek Jain says:

      You need 1.2 ton fixed speed or 1 ton inverter AC for your room. You can check these:

      1.2 ton AC:
      Hitachi RAU514IUD or RAU514EUDA
      Whirlpool 3D Cool Platinum V or Magicool Platinum V
      Voltas 155 CY

      1 ton inverter AC:
      Daikin FTKM35PRV16 or FTKP35PRV16 (1 ton)
      Hitachi ACE or iClean Inverter AC (1 ton)
      Sharp AH-XP13LV, AH-XP13PHT, AH-XP13PMT, AH-X13PET (1.1 ton)
      Samsung AR12HV5NBWK or AR12HV5DAWK (1 ton)
      Panasonic CS-S12PKYP Econavi (1 ton)

      Would suggest to go for inverter AC.

      • Deepak says:

        Thanx sir appreciate ur work,also tell about the installation process means what should be the minimum and maximum distance between the indoor and outdoor unit bcoz as I told u before my room is on ground floor but the open area is on the roof of the second floor of height 10 feet each.

        • Abhishek Jain says:

          Well there is no specific minimum or maximum distance that is mandatory. The pressure of refrigerant in the tubes should be right. If you look at technical specifications of any model, they will give maximum piping distance (mostly about 12 to 15 mts). There is no minimum. It is just that if you increase the length more than that specified, you will have to add extra refrigerant to maintain the pressure which will come at additional costs.

        • Deepak says:

          Thanx sir for ur valuable suggestions,I have 2 more query to clerify I have a 4kw power backup connection and the load is about 3 to 3.5kw in summers and under 2kw in winters as my electricity bill shows so tell me there is a need to exeed power backup connection to fix inverter technology ac of 1 or 1.5 ton?
          Second question is that according to ur suggestion 1 ton of split ac is sufficient acc to my room size but I want to know I have a separate room of same size beside of this room now I want to install 1.5 ton of ac instead of 1 ton with exhaust fan between the wall of this two rooms,1.5 ton inverter ac is installed in one room and the cool air will pass by the help of exhaust fan into another room for both roomates feels cooling,this is possible or not?
          Thanx once again m eagerly waiting for ur reply.

          • Abhishek Jain says:

            1 ton inverter AC would add 1 KW and 1.5 ton inverter would add 1.5 kW to the load. Also if you add another room of the same size then the tonnage requirement will double up. So if the room needs 1 ton, then for two rooms, the requirement would be 2 ton.

  18. Mandeep singh says:

    hello , kindly suggest us a split inverter technology AC for a room size of 12 * 12 *10 .( ground floor)
    no direct sunlight .

  19. ravi says:

    ok so if i have to choose in mistubushi 1.5 tonnes which would be right model that u will suggest .. I have few lg ac in my house but i find their cooling is not that good and also thier energy consumption is high so i certainily am not much satisfied with lg though their service is good … and if u have any personal experience with 1.5 tonne ac then suggest that company model too and also let me know abt its service bz thats the biggest pain in a$$ with many companies bz its electrical stuff and so there is bit of luck too as some times best companies ac peice are faulty for u but may be good for others… and i will also go to shop and will get some models code and will let u know too and then i can ask best among those …….. And ya one more thing i was discussing with my brother abt 3 star and 5 star … he said that energy saving is not as much compared to the models rate differece and by the time i buy ac next time insteaad of saving money i am infact loosing some … is that thing true ???

    • Abhishek Jain says:

      Hi,

      If you are looking for Mitsubishi Electric then there is one 1.5 ton model: MS-GK18VA which is a BEE 5 star rated model. If you are looking for Mitsubishi Heavy Industries then there are 3 models: SRK21CNS-S6 (BEE 5 star), SRK19CK-6 (BEE 3 star) and SRK19CK-6 (BEE 2 star). Mitsubishi is a good brand for sure. As for 5 and 3 star rated AC, the choice will depend on your usage. We typically recommend people to go for BEE 3 star split AC if usage is less than 1000 hrs per year and price of electricity less than Rs 5 a unit. If usage is between 1000-1500 hrs per year, then we suggest going for BEE 5 star split and beyond that Inverter Tech split AC. This is for 3 years payback for the extra money you pay to buy the appliance.

      • ravi says:

        well i checked in the market and there is mistubushi electric acs model avlaible …. mistubushi heavy elctric model not there … in mistubushi electric also there is 1 3 star model MS-HK18VA …. so how abt this model and will mistubushi be better than lg in 1.5 tons considering cooling, power consumption and after sales service as i saw list prepared by u for the tonnage catagory in which u listed the top model but i dint find mistubushi there in 3 star catagory and top slots were taken by lg if not wrong … bit confused which among these 2 i should prefer if i were u …..

        • ravi says:

          among mistubushi heavy industries and mistubushi electric i found abt heavy industries review on net that its cooling is great or even better than most premium brands like hitachi , diakin , lg etc but service not as good bz they r just imported by 3rd party but for mistubushi electric i cant find enough on net abt its cooling …. but from net reviews can tell that their service setup is fine . even in my areaa i found thta there is support for mistubushi electric but no service facility for mistubushi heavy industries .. can u tell from ur experience or if u know some person using mistubushi electric , how is their cooling ….. regards

          • Abhishek Jain says:

            Hi Ravi,

            Cooling depends on cooling capacity of AC. Higher the cooling capacity, faster is the cooling (or higher the tonnage, faster the cooling). So cooling is specific to model and not to brand. Brand is more for reliability, technology and service.

          • Abhishek Jain says:

            Also as per my knowledge, ME is as good as other Japanese brands like Hitachi & Daikin in terms of technology and reliability.

          • ravi says:

            well they r sister company mistubushi electric and mistubushi heavy industries …. but i saw on consumer complaint forum and there people commented on heavy electric .. the major problem they had was with their service bz their products are just imported by international aircon to india and so they dont have great service setup here … but with mistubushi electric i am not able to get any reliable input abt their reliability and service …. so if u have any proper input abt it or know someone using them then let me know the inputs ……

            and thanks for the help i m getting on ur forum . quite informative …

          • Abhishek Jain says:

            Hi Ravi,

            Sorry we do not have feedback on MHI vs ME comparison.

    • ravi says:

      finally i have decided to go with mistibushi heavy industries 1.5 tn ac . abhishek have u got any input how far i can rely on their sercive bz i conpared their technology and cooling and area it can cover , its by far more better than mistibushi elctric and lg products … so any intel on their after sales service pls enlighten me with the info ….

  20. Mat says:

    Hi Guys,
    Can we go for IFB Kid series A/c….Plz suggest…

    Regards,
    M

    • Abhishek Jain says:

      The energy efficiency numbers do not look very exciting. Cooling Capacity is 5145 W and power consumption is 1704 watts (http://www.homeshop18.com/ifb-split-1-5-air-conditioner-iacs18ck3tcc-3-star-children-series/household-appliances/home-appliances/product:30548471/cid:4259/) …. which means EER is just about 3.02 … which is quite low. You can certainly get better ACs.

  21. Tanushree Sharma says:

    Hi,Abhishek your website is a great effort! And for my power requirement, I’ve a fridge of 500 watt, a ceiling fan, a CFL, a normal TV.. Would 2kw power supply be enough for 0.8 ton A.C.?

    • Abhishek Jain says:

      The AC you mentioned has power rating of 910 Watts. Even if we take 1 kW, then you have another 1 kW. Fridge is 500 watts, Ceiling fan would be 75-90 Watts. CFL another 25 watts. A CRT TV would be another 120 watts. So 2 KW should be good enough.

  22. Tanushree Sharma says:

    I have a power connection of 2KW. Would it be sufficient for a 0.8 ton window A/C? What kind of Voltage stabilizer do i need? I have a 100sq.ft room & I’m thinking to buy Haier 0.8 Ton 1 Star HW-09CH1N Window Air Conditioner, and Voltech Voltage Stabilizer (V-Star1). I need an expert opinion. Please help!

    • Abhishek Jain says:

      0.8 ton window AC should work on 2 kW connection however it will also depend on other appliances that you have (because the sum total of all should be less than 2 kW). Before buying stabilizer you should know the levels to which voltage in your house drops. If it is less then you can go for small range voltage stabilizer, else you would have to go for a larger voltage range stabilizer. Some companies make stabilizers only for ACs which have intelligent time delay system which protects compressors. So it will be better to go for such voltage stabilizer. The model you have chosen seems to be good for ACs.

  23. Satish Shah says:

    Bareilly. No there’s no direct sunlight on either of the walls.

    • Abhishek Jain says:

      You can go for BEE 3 star 1.5 ton AC. You can look at these models:

      Brand Model Cooling Capacity (in Watts) Power Consumption (in Watts) EER Ratio
      HITACHI RAW318KUD 5100 1650 3.09
      HITACHI RAV318HUD 5100 1650 3.09
      LG LWA5CS3F 4850 1610 3.01
      LG LWA5BP3F 4850 1610 3.01
      LG LWA5PS3F 4850 1610 3.01
      LG LWA5CP3F 4850 1610 3.01
      HITACHI RAW418KTDG 5200 1735 3
      LG LWA5MR4D 5275 1760 3
      PANASONIC CW-YC1814YA 5054 1700 2.97
      LG LWA5CS3F1 5050 1705 2.96
      LG LWA5CP3F1 5050 1705 2.96
      GODREJ GWC 18 GQ 3 WNC 5125 1737 2.95
      BLUESTAR 3WAE181YC 4950 1690 2.93
      CARRIER Estrella Plus 5250 1800 2.92
      BLUESTAR 3W18LB 5030 1730 2.91
  24. Satish Shah says:

    Hi Abhishek,

    Please suggest some good AC brands for room size 13×11 foot, height 11.5 feet, which consumes less electricity & cools effectively. I intend to buy 1.5 ton split AC. There are 4 windows in the room. It is in ground floor and there is no direct sunlight on AC. Our usage would be around 800-900 hrs annually.
    Also please suggest the machine position of indoor and outdoor unit. Should the outdoor unit be at the same level(height) or more as the indoor one?

    Thanks!

  25. Parool says:

    Hi Abhishek,

    I wanted to know, that what is the performance meter for Hitachi air conditioners in India?
    How about the services from them? Coz I can see a lot of bad reviews on net for Hitachi.

    On the other hand my mind was set on Hitachi AC’s coz of the difference in EER ratios.
    On comparing it to any other brands which states the EER as no more than the range from 3 to 5, Hitachi states it as 10 and above. So the difference is a lot.

    Hence, shall I go for Hitachi or not?

    • Abhishek Jain says:

      Hi Parool,

      Hitachi certainly has the highest EERs but it is wrong to compare the numbers that show in range of 10 to those in between 3 and 5. Energy Efficiency of Air conditioners is mentioned in EER as well as COP and they are used so interchangeably that it gets confusing at times. Unit for COP is Watts/Watts (or W/W) and this value typically ranges between 2 and 4 for all ACs in India. EER is in BTU/Watt.hr and it is 3.41 times COP value and ranges between 6.82 and 13.64 for all ACs in India. Whenever you are comparing 2 ACs and for one you see a value between 2 and 4, and for other you see a value between 7 and 13, simply divide the bigger value by 3.41 or multiply the smaller value by 3.41.

      Now we have also heard complaints about Hitachi service but we have also seen people specifically asking for Hitachi. So it is kind of mixed response. Hitachi as a brand is known for their quality, however we have heard complaints about their higher noise levels too. Some people had good experience with Hitachi and want to purchase it again, while some complain. So if you do not have any personal experience with the brand or not know someone in your area who has had good experience with the brand, then going for other brands would be safer. However if you know some people in your area who had good experience with the brand, you can certainly go for hitachi. Because if their service in your area is good, it can work very well.

      • Parool says:

        Thanks Abhishek for the reply.

        This blog seems really informative and hence helps a lot in taking an informed decision.

        Well, with your suggestion, I have asked a few people nearby who said “nothing like Hitachi. Go ahead.”
        So i guess I will go for it then.

        Any suggestions for the stabiliser? the voltage fluctuation at this place is very high. At few times, it is said to be around 90, i heard. So, what brand and what type of stabilizer would you suggest and what would be the price range?

        • Abhishek Jain says:

          Hi Parool,

          I am glad that you were able to decide and found the website useful. 90V is too low a voltage and if it really goes that low, you should complain about it to your utility. It will be hard for any stabilizer to step up the voltage from 90V to the desired voltage level. One brand that I have used and which has very big input voltage range is Blue Bird (http://www.bluebirdstabilizer.com/voltage_stabilizer.html). It has specs to handle 115-270 V input. But even the output is 195-245 which means at 115 V input it will scale it up to 195V output. There are some voltage stabilizers that can handle 90V input. Some of them are there on these links:

          http://www.snapdeal.com/product/staar-automatic-voltage-stabilizer-90/1353189
          http://www.stylexindia.com/prod_stab_mainline.htm
          http://www.bpower.in/main-line-voltage-stabilizer.htm
          http://www.desta.in/automatic-voltage-stabilizers.htm

          But I am not sure about the quality of these stabilizers. They may be good but I have no experience with them to vouch for their quality.

    • ravi says:

      very true what abhishek told u … i have purchased ac from one of my relatives shop and even he said that their service is a problem last couple of years ….he told me to go for o general if i can afford it but its very sensitive to fluctuations thats only thing due to which some cases of problem arised with his customers … second was mistibushi heavy industries as their serivces are getting better and that only thing it was lacking its in mid range but the copper wire cost will be additional bz none imported sets provided with copper wire and third is lg to fit the pocket and if u are basically looking for service they r the best .. hoped i helped with ur question thats the data i did confirmed with some others too b4 purchasing hope it helps others too …..

      regards

  26. vishal mehta says:

    I have LG 1.5 3 star window ac.
    7.4 A / 1610whatt .

    But it consume 8.9 amp. One hour use consume 1.5unit. Is it ok or proble in machine.
    Also gril temp. Is13.5. Pls guide me isit ok . Ac is only 10days old.

    • Abhishek Jain says:

      What temperature are you keeping the AC at? Is there direct sunlight on the AC? Are you getting low voltage in your area?

      • visahl mehta says:

        i keeping ac in 26c. no direct sunlight on ac. … voltage 220 to 240 ..

        • Abhishek Jain says:

          You should complain this to LG as instead of 1610 watts, at 8.9 amp it is taking almost 1920 watts. In fact this should also go to BEE so that it’s star rating is re-validated.

        • Abhishek Jain says:

          Can you give me your model number?

          • visahl mehta says:

            my model no. lg LWA5CS3F

          • Abhishek Jain says:

            Thanks. Do register a complain with LG.

          • visahl mehta says:

            lg told me 1 amp. ka variation rahega. aur vo log hero honda ki avrage ka example dete he.
            my voltage is 220 to 240.
            what can i do. sir pls guide me.

            amp. 8 consuption to raheta hi he.

          • Abhishek Jain says:

            Hi Vishal,

            1 amp variation is variation of 200 watts!! It can change BEE rating by 2 levels!! There is process in BEE to challenge star rating and in fact a few samsung, panasonic and godrej models were stripped of their star rating a few days back. So I guess if it is not possible to return the AC then the solution is to go to BEE and challenge the rating or go to consumer forum.

  27. ravi says:

    hello abhishek,

    I have two rooms connected 12×14 foot and 7.5×12 foot , i want to cool both rooms . what tonnage ac i should go for. i house is in kanpur , it has 2 windows and in noon time direct sun rays come , and i am on the ground floor , I asked for suggestion and some people suggested me to go for lg 2 tonnes and some said if u can go in higher range go for o general as it will cool both room with less load on compressor for 1.5 tonnes ac . i am bit confused which brand will be good so that later on i dont have problem with maintanance, eleectricity or any other problem … kindly suggest which company ac to choose and what tonnage as per my requirement so that electricity is saved and after sales maintainance is less …. and ya also give the suggestion under saame condition if i just have to cool one room of size 12×14 foot instead of 2 rooms.

    regards

    • Abhishek Jain says:

      When you say ground floor, I assume that there are more floors on top of the room. And also I assumed that you do not have a sun facing west/south west wall. In that case you need about 2.5 tons of cooling if you want to cool both the rooms during peak summer day time. If the usage is only at night then 2 ton would be sufficient for both the rooms combined. 1.5 ton AC would be good if you want to use the AC only for 12×14 room (both during day and night). Smaller the AC lesser is the electricity consumption. And I must say even 1.5 ton O General AC will not be able to cool both the rooms together. You will have to go for 2 ton at least (assuming usage is mostly at night). If you can tell me the tonnage that you want to go for, I can suggest you some models.

      • ravi says:

        well i want 1.5 tonnes then . later if not satisfied then i will go for 1 tonne ac seperately for the small room . so suggest me which ac i should go which is best as far performance is concered …and after sales maintance and service. bz i was searching for o general review so i saw many people were complaining abt them abt their service and in their indian models there was some problem in their ac though i asked few shopkeepers and they suggested me o general if i can afford the price as its air flow range is best and in low raange they told me lg is good . though i wanna know ur opinion since i am confused which will be the best choices for the above criteria and i cant rely much on online reviews since many sites give negative reviews them selves to gain popularity ….

        regards

        • Abhishek Jain says:

          O General is a good brand for technology/reliability, however their ACs do not rank high in electricity consumption efficiency. However you can look at these models:

          Hitachi RAU518HUD
          Godrej GSC 18 FG 6 WNG or GSC 18 FG 6 ONG or GSC 18 FG 6 BNG
          Whirlpool 3D Cool Climate Control PLT V or 3D Cool Elite IV
          or any LG BEE 5 star rated model
          Mitsubishi MS-GK18VA

          • ravi says:

            well i asked some air conditioners shop they said if u goin for o general which is high range better go for mistabushi bz none of the customer who purchased mistabushi had no problem till now and every ac company almost uses mistubushi compressor .. is that truee abt compressor ? and will mistubushi be right choice for 1.5 tonnes as far cost of electricity and after sales service . so far i am considering abt mistubushi, lg, hitachi, and daikin … so give ur opinion … And if their is any draawback in mistubushi or above stated brand let me know so i can compare their pros and cons …..

            regards

          • Abhishek Jain says:

            Most top Japanese brands have their own compressors. Hitachi, Daikin, Mitsubishi have their own compressors. In fact many local brands just assemble the components purchased from these companies. As japanese companies make their own compressors, the designs are more stable as their components work well with each other. And thus their reliability is high as compared to local brands. However while buying AC you should also look at the efficiency of the compressor. Reliability is one aspect, efficiency is also important. Hitachi, Daikin have models that are extremely good in energy efficiency (at least the EER numbers show that). Mitsubishi also has a few models that rank high in efficiency. So I think you should give equal importance to both the factors and choose the right model (rather than focusing too much on the brand, after you have finalised top few brands).

  28. G Samant says:

    Hi abhishek,
    I shifted to a new house in delhi 4th floor, total floors are 6.
    I have 3 bd rooms all 14×12. A 28×12 living room and a 18×12 dining room.
    I have put blinds on my windows to avoid direct sunlight.
    Can you suggest a MULTI-split ac arrangement for me.
    I intend to use 3 indoor units in each bd room and 2-3 indoor units in my drawing dining as it longer in shape.
    Also any particular brand with good multi split arrangement.

    • Abhishek Jain says:

      Hi,

      14×12 rooms would need 1.5 tons cooling. 28×12 room would need 3 tons of cooling and 18×12 room would need 2 tons of cooling in Delhi (assuming the walls also do not get much direct heat from sun). You can look at Daikin or Sharp’s multi split inverter AC for your house. You can call their engineers for evaluation.

  29. Sandeep says:

    Hi Abhishek,

    First want to say thanks for running such a useful and informative website and doing a great service towards the good of society.

    Second my question, I am looking for an Windows AC for a room size of 17×14 in Delhi. This room doesn’t really get direct heat from any side and is on first floor of 8 storey building. There is no electrical appliance (excluding Fan and Light obviously) and just one double bed and an Almirah is there in room. And generally there would not be more than 3 person at anytime in the room.

    What would be the best model for AC you would suggest to me?

    Thanks in advance for your answer.

    • Abhishek Jain says:

      Hi Sandeep,

      I am glad that you found the information useful. For a 17×14 room in Delhi, the tonnage requirement would be about 2 ton (for a non sunny room). You can get 2 ton window ACs, but they would not be energy efficient. Best 2 ton window AC would be rated as BEE 2 star which is equivalent to BEE 1 star split AC. We typically do not recommend people to go for less than BEE 3 star split AC and recommend people to go for BEE 3 star split AC if usage is less than 1000 hrs per year and price of electricity less than Rs 5 a unit. If usage is between 1000-1500 hrs per year, then we suggest going for BEE 5 star split and beyond that Inverter Tech split AC. This is for 3 years payback for the extra money you pay to buy the appliance.

      I would suggest you to reconsider going for Split AC.

  30. amit says:

    City is GURGAON.
    Br
    Amit

    • Abhishek Jain says:

      You need a 1.2 ton fixed speed AC or 1 ton inverter AC for your room. You can check these:

      1.2 ton AC:
      Hitachi RAU514IUD or RAU514EUDA
      Whirlpool 3D Cool Platinum V or Magicool Platinum V
      Voltas 155 CY

      1 ton inverter AC:
      Daikin FTKM35PRV16 or FTKP35PRV16 (1 ton)
      Hitachi ACE or iClean Inverter AC (1 ton)
      Sharp AH-XP13LV, AH-XP13PHT, AH-XP13PMT, AH-X13PET (1.1 ton)
      Samsung AR12HV5NBWK or AR12HV5DAWK (1 ton)
      Panasonic CS-S12PKYP Econavi (1 ton)

  31. AMIT says:

    Hi Abhishek, could you suggest the best option for an AC model for:
    12.5x10x10 feet room
    No direct exposure to sunlight from all 4 sides and top also.
    1 big steel almirah inside and 1 double bed
    No electrical appliances except an LED TV
    Since the room is at back side of house and surrounded from all 4 sides, we need to have a split AC, with compressor unit placement alteast 3 meters from main unit.

    Need an economical+durable+energy efficient model. Kindly suggest.

    br
    Amit

  32. Rahul says:

    Hi Abhishek,
    I am Rahul from Kolkata. I have two rooms 11’X11′ and 10’X14′. height(11′) for both. I want to buy an Split AC which have 2 outlets for these two rooms(May be it’s called multiSPLIT). Please suggest me the best energy saving one.

    • Abhishek Jain says:

      Hi Rahul,

      For room one: You need a 1.2 ton AC if there is no direct sunlight on west/south-west wall and on ceiling, and in general room is less sunny. Else if the west/south-west wall or ceiling get direct sunlight and there is good amount of sunlight from the windows, then you need about 1.5 ton AC. If you need 1.2 ton AC, you can also go for 1 ton inverter AC which will be quite energy saving. However in case of 1.5 ton AC, you will have to go for 1.3 ton inverter AC (of which there are only 2 models in market) or 1.5 ton inverter AC.

      For room 2: You need a 1.3 ton cooling if there is no direct sunlight on west/south-west wall and on ceiling, and in general room is less sunny (you can go for 1.2 ton if usage is mostly at night). Else if the west/south-west wall or ceiling get direct sunlight and there is good amount of sunlight from the windows, then you need about 1.7 ton cooling (or 1.5 ton if usage is mostly at night). If you need 1.3 ton AC, you can also go for 1.3 ton inverter AC which will be quite energy saving. However in case of 1.7 ton AC, you will have to go for 1.5 ton inverter AC.

      We typically recommend people to go for BEE 3 star split AC if usage is less than 1000 hrs per year and price of electricity less than Rs 5 a unit. If usage is between 1000-1500 hrs per year, then we suggest going for BEE 5 star split and beyond that Inverter Tech split AC. This is for 3 years payback for the extra money you pay to buy the appliance.

      Let me know the size and type you need and I can suggest you some good models.

    • Abhishek Jain says:

      Forgot to add: A multisplit makes sense when you need 3 or more units. For two units, it is better to go for individual units.

  33. Riship says:

    Dear Abhishek,

    My self Riship from Amritsar as I am looking to purchase an AC for my 12 x 14 bed room set. Occupancy 3 persons, led, almirah, laptop. I want Best Quality & Best Service Provider in this industry.More Information about room its 3 side open & full graced with sun shine there is no house in sides & back , i lives on first floor & my land lord has window ac just below my room through their lobby , that also heats my room . Pls. clear my doubts as earliest .

  34. Abhishek Jain says:

    You need 2 ton AC for your room. You can look at these models:

    Hitachi RAU524IUD or RAU524HUD or RAU524ITD
    Mitsubishi Electric MS-GK24VA
    Voltas 245 DY
    Bluestar 5HW24MA

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